how to measure

Width is measured in a straight line from the furthest point on one sidewall, across the tread, to the furthest point on the opposite sidewall.

The aspect ratio is the height of the tire sidewall. A smaller number means a lower profile, and the height-to-width ratio is shown as a percent.

Rim diameter is the diameter of the rim/wheel on which the tire will be mounted, in inches.

tire width
tire aspect ratio
rim diameter
1981 Suzuki
GN400T
  • Drive Type: Chain
  • Front Tire Size: 3.60-18
  • Rear Tire Size: 4.60-16
  • Spark Plug: D8EA
  • Chain Size: 520
  • Chain Links: 98
  • Front Sprocket/Pulley Teeth: 16
  • Rear Sprocket/Pulley Teeth: 37
For reference only, please consult your owner’s manual to confirm your sizes
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  • Front Or Rear HF319 3.00-18 Blackwall Tire
    exact fit
    3.5 star rating (4)
    $39.88
    Same Day Shipping
    Part #: 544583 Mfg Part #: 25-31918-300BTT
  • Front HF317 3.00H-18 Blackwall Tire
    exact fit
    4.5 star rating (20)
    $58.88
    Same Day Shipping
    Part #: 540771 Mfg Part #: 25-31718-300BTT

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